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Low-Power, 32-bit Cortex-M0+ MCU with Advanced Analog and PWM
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ATSAMD21E15
ATSAMD21E15L
ATSAMD21E16
ATSAMD21E16L
ATSAMD21E17
ATSAMD21E18
ATSAMD21G15
ATSAMD21G16
ATSAMD21G16L
ATSAMD21G17
ATSAMD21G18
ATSAMD21J15
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34
AC – Analog Comparators
34.6
Functional Description
34.6.2
Basic Operation
Features
1
Description
2
Configuration Summary
3
SAM D21 Ordering Information
(1)
4
Block Diagram
5
Pinout
6
Signal Descriptions List
7
I/O Multiplexing and Considerations
8
Power Supply and Start-Up Considerations
9
Product Mapping
10
Memories
11
Processor And Architecture
12
Peripherals Configuration Summary
13
DSU - Device Service Unit
14
Clock System
15
GCLK - Generic Clock Controller
16
PM – Power Manager
17
SYSCTRL – System Controller
18
WDT – Watchdog Timer
19
RTC – Real-Time Counter
20
DMAC – Direct Memory Access Controller
21
EIC – External Interrupt Controller
22
Nonvolatile Memory Controller (NVMCTRL)
23
PORT - I/O Pin Controller
24
EVSYS – Event System
25
SERCOM – Serial Communication Interface
26
SERCOM USART
27
SERCOM SPI – SERCOM Serial Peripheral Interface
28
SERCOM I
2
C – Inter-Integrated Circuit
29
I2S - Inter-IC Sound Controller
30
TC – Timer/Counter
31
TCC – Timer/Counter for Control Applications
32
USB – Universal Serial Bus
33
ADC – Analog-to-Digital Converter
34
AC – Analog Comparators
34.1
Overview
34.2
Features
34.3
Block Diagram
34.4
Signal Description
34.5
Product Dependencies
34.6
Functional Description
34.6.1
Principle of Operation
34.6.2
Basic Operation
34.6.2.1
Initialization
34.6.2.2
Enabling, Disabling and Resetting
34.6.2.3
Comparator Configuration
34.6.2.4
Starting a Comparison
34.6.3
Selecting Comparator Inputs
34.6.4
Window Operation
34.6.5
Voltage Doubler
34.6.6
V
DDANA
Scaler
34.6.7
Input Hysteresis
34.6.8
Propagation Delay vs. Power Consumption
34.6.9
Filtering
34.6.10
Comparator Output
34.6.11
Offset Compensation
34.6.12
Interrupts
34.6.13
Events
34.6.14
Sleep Mode Operation
34.6.15
Synchronization
34.7
Register Summary
34.8
Register Description
35
DAC – Digital-to-Analog Converter
36
Peripheral Touch Controller (PTC)
37
Electrical Characteristics at 85℃
38
Electrical Characteristics at 105°C
39
Electrical Characteristics at 125°C
40
AEC-Q100 125°C Specifications
41
SAM DA1 Electrical Characteristics
42
Appendix A
43
Appendix B
44
Packaging Information
45
Schematic Checklist
46
Conventions
47
Acronyms and Abbreviations
48
Data Sheet Revision History
Microchip Information
34.6.2 Basic Operation
